James hamilton



J. HAMILTON. 'MAGHINE FOR CRUSHING QUARTZ, 8w.

No.10,365. 1 Patented m 1854:

JAMES HAMILTON, OF NEW YORK, N. Y.

QUARTZ-CRUSI-IING MACHINE.

Specification of Letters Patent No. 10,365, dated J anuary 3, 1 854 To all whom it may concern:

Be it known that I, JAMES HAMILTON, of the city, county, and State of New York, have invented, made, and applied to use certain new and useful Improvements in Machinery for Crushing and Grinding Quartz or other Substances; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawing, making part of this specification, wherein' Figure 1, is a plan, Fig. 2, is a side elevation with the side plate of the apparatus removed, and Fig. 3, is a cross section through the center of the machine.

The like marks of reference denote the same parts.

The nature of my said invention consists in the use of a cylindrical nut or. pestle in a similarly formed basin, the pestle having a partial rotary and crushing motion communicated to it by means of a lever attached thereto.

a, is a basin the lower part of which is made circular and the sides parallel to each other.

I), b, are flat ends or heads secured to the basin by bolts 1, 1.

0, is a shaft carrying the cylindrical pestle (Z.

c, is a lever or arm attached to or formed with the pestle d, the upper end being connected by a joint 2, to a pitman passing to a crank, eccentric or other suitable mechanical contrivance to give the arm 6, an oscillating movement and the pestle a partial rotary motion on its shaft 0. The ends of this shaft 0, are supported in journal boxes 9, set in slides in the end plates 6, to each of which slides a cap h is attached by screws 4, and the parts being properly faced slide nearly if not quite water tight, and at the same time allow the cylindrical pestle and shaft to raise up if required.

The pestle cl, is provided with a slot in its lower side into which I place a scraper 5, and the basin a, has a slight recess 6, at its bottom in which the scraper 5, operates.

7 is a pipe attached to one side see Fig. 3. The operation of the parts is as follows: Quartz or other substances to be ground or pulverized are placed in the basin on each side of the pestle and this receiving the partial rotary motion described gradually breaks and crushes the material under oper ation, and the grooves shown in Figs. 1 and 2, across the upper surface of the pestle, which gradually grow smaller toward the level of the center of the pestle, operate'on any large pieces cracking and breaking the same until they pass between the smooth parts of the pestle and basinwhich both being circles one slightly smaller than the o-thergradually approach together until they coincide at the bottom, thus I obtain first a crushing and then a gradual'grinding and pulverizing operation, and the scraper 5, operating in the recess 6, stirs up the fine particles and carries them first to one side and then to the other to insure their being thoroughly pulverized.

In operating upon metallic ores which require water during the operation of grinding the pipe 7 is to be used to convey the same off but where substances are ground dry they are to pass off through an opening in the ends.

It will be evident that movable cheek pieces might be attached to the upper surface of the cylindrical pestle, provided with grooves; by which means new cheek pieces can be applied when the grooves are worn,

out, and if required the upper part of the insides of the basin may also be provided with grooves.

I do not claim the cylindrical pestle or roller in itself as it has been used on a flat surface, and I am also aware that the cylindrical pestle has been used in a concave dish or basin, but in this case so far as the rolling larly to the ordinary rollers inoil mills v&c., but the sliding motion is dependent on the weight of the pestle causing the same to slip on the inclined part and rub the ore, whereas in my machine the ore is first cracked by the grooved upper surface'of the pest-1e which I am not aware has ever been,

before used, and the grinding is performed by a pestle set on a shaft and having a parwith grooves in its upper part to crack the 1 lumps of ore, and set on a shaft (0) which it has a partial rotary motion and operating in connection with the basin (a) h ran STATES rnrn v'rorr on. v

" motion is concerned the same operates'simiin which said pestle moves to grind the ore into powder by the gradual approach of the sides of said basin to the cylindrical pestle, said pestle being also provided with a 5 scraper or agitator (5) in its lower surface to operate as specified. v

In testimony whereof I have hereunto set my signature this twentieth day of Octoberonethousand eight hundred and fifty three.

JAMES HAMILTON.

WVit-nesses LEMUEL W. SERRELL, THOMAS Gr. HAROLD. 

